Printing-press.



- PATBNTED FEB. 18, 1908. W. H. SMITH.

PRINTING PRESS.

APPLICATION FILED JAN. 7, 1907.

v 2 SHEETSSHEET l.

19i hi 009% PATENTED FEB. 18, 1908. W. H. SMITH.

PRINTING PRESS.

APPLICATION FILED JAN. 7, 1907.

2 SHEETSSHEET 2.

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UNITED STATES PATENT OFFICE- WALTER HAROLD SMITH, OFNILES OHIO, ASSIGNOR TO THE HARRIS AUTOMATIC PRESS COMPANY, OF NILES, OHIO, A CORPORATION OF OHIO.

PRINTING-PRESS.

Specification of Letters Patent.

Patented Feb. 18,1908.

Application filed January 7. 1907. Serial No. 351-235- v ing to be a full, clear, and exact description of the invention, such as will enable others skillel in the'art to which it appertains to make and use the same.

The primary object of this invention is to provide simple and efficient means for automatically throwingjthe form-rolls of a print- ,ing press out of engagement with the formcylinder, such means being ordinarily restrained by means which may be tripped either manually or automatically in the event of the throwing off of the press cylinders.

The invention will be hereinafter fully set forth and particularly pointed out in the claims. In the accompanying drawings, Figure l is an end view, with some of the parts diagrammatically shown, and other parts omitted. I ig. 2 is a side. elevation, with parts broken away. Figs. 3 andA are en- Referring to the drawings, 1 designates the series of form-rolls whose shafts are mounted in open top bearings 2. When the transfer-rolls 3 are raised, the form-rolls may be-lifted from their bearings. The shaft of sufficiently to hold them out of each form-roll carries, ad acent each end, a loose friction collar 4, with which are designed to engage shoulders 5 on the peripher of a late 6 movable concentricall to the rolls, ein mounted on an extension of the hub of t-e form-cylinder 7. Similar means is provided at each side of the press. The form-rolls 1 are arranged concentrically 'to-zthe form-cylinder, as well as to plate 6, so that shoulders 5 upon engaging the collars 4 willlift the form-rolls from their bearings contact with the form plate, and yet allow them to continue-to rotate with the other ink-rolls.

.The axial turning of the roll-lifting plate 6 maybe accomphshed by various means, but In invention contemplates the actuation of suc plate by the recoil of a" spring placed under tension by the lowering of the formrolls into contact with .the form cylinder,

v that is to say, by the'turning of plate 6.

g This plate is shown as having an arm formed with a segmental rack 8 in mesh with a gear' which latter yields suifioient y 9 on a shaft 10 extended across the press frame. On this shaft is a coil spring 12, one

end of which is secured to the gear, and the other to the frame, such spring being placed under tension hen'the shaft 10 is turned to lower the form-rolls, the manipulating arm 13 of such'shaft being then held by a trip 14 engaging a lug 15 prejecting laterally from said arm. Said trip is in the form of a bell crank lever mounted on an extension of the press-frame, and is automatically disengaged'from lug 15 by the downward move-- ment of a trip rod 16 having a shoulder I6 for engaging the end of the horizontal arm of such trip 14. The latter may be manually released by turning a handle-17 on the fulcrum shaft of such trip. The rod 16 is designed to be actuated to release the trip when the press-cylinders are thrown-off or out of printing relation. For this purpose I have shown the rod 16 connected at its lower end to the spring impelled shaft 18 to which the eccentric bearings of one of the press-cylinde'rs, are connected. This may be the impression-cylinder, or it may be the transfer cylinder in a planographic or off-set press.

Rod 16 is'passed through a guide 19 and is normally held against the tri by spring 20,

rod to clear the trip in its upward movement. I g v In practice, -when the press-cylinder is to allow. the

tripped, .by the actuation of the throw-01f. mechanism, with or without the actuation of stop mechanism, the. rod 16 is pulled downwardly and its shoulder disengages trip 14 from lug 15 permitting shaft 10to turn under the recoil of its spring, the gear 9 eflecting,

through its engagement with rack 7, the' axial turning of the roll shifting plate, thereby throwing the form rolls out of engagementwith the form cylinder. This turning of the roll-shifting plate is assisted by i the friction. between such plate and the hub of theform-cylinder, which latter is revolved in the direction in which the shifting plate is moved'by the spring. To restore the formrolls to their normal working positions, the operator raises the arm 13 of the spring-impelled shaft until it is engaged and held by the trip, thereby putting the spring under tension ready, upon being released, 'to again actuate the roll-shifting plate.

I claim as my invention:

1. In a printing press, the combination with the form-rolls, of means for movin such rolls out of their normal position, sai means comprising a roll-engaging member, a spring-impelled shaft for actuating such member, a trip for normally restraining such shaft, and means for releasing such trip. 2. In a printing press, the combma'ti with the form-rolls, and bearings therefor, of: means for engaging such rolls and moving it) them from said bearings, said means comprisin a rolLengaging member, a' s ringimpel ed shaft for actuating such mem er, a

trip for normally restraining such shaft, and

- mally restraining said shaft, and means for means for releasing such trip.

3. In a printing press, the combination with a series of form-rolls arranged on the arc of a circle, of means for engaging said rolls and moving them out of their normal positions, comprising aroll engaging memor movable concentrically to said rolls,a

spring impelled shaft for actuating such member, a trip for normally restraining such shaft, and means for releasing such trip.

4. Ina printing press, the combination with a series of form-rolls arranged onthe arc of a circle, of means for engaging said rolls and moving them out of their normal positions, comprising a plate mounted concentrically to said rolls and having a series of peripheral shoulders for engaging the latter and moving them into a different plane, spring-impelled means for actuating such plate, and means for normally restraining such latter means;

5. In a printing press, the combination with a series of form-rolls arranged on the arc'of a circle, of means for engaging said rolls and moving them out of their normal positions, comprising a plate mounted con- 40 centrically to said rolls and having a series of peripheral shoulders for engaging the latter an moving them into a different plane, a

s ring impelled shaft for actuating such psate, andmeans for normally restraining such shaft.-

- 1 6. In a printing press, the combination with a series of form-rolls arranged on the arc of a circle, of means for engaging said rolls and moving them out of their normal positions, comprising a plate mounted con- 'centrically to said rolls and having a series,

of peripheral shoulders for engaging sthe latter and moving them into adifferent plane,

a spring-impelle shaft for actuating such plate,"a.trip for normally restraining such shaft, and means for. releasing saidtrip.

- 7. In a rotary printing press, having, in

- combination, a plurality of cooperating cylinders, and means for throwingsuch cylinders out of printing, relation, a-seriesof formrolls arranged concentrically to the form-cylinder, a late movable concentrically to said forni-cy nder for movin said rolls out of contact with said form-cy 'nder, a shaft normally tending to actuate said plate, and

said t means designed to be actuated by the throw off of the press-cylinders, for permitting said shaft to actuate said plate to move said rolls out of contact with the form-cylinder.

78. In a rotary printing press, having, in mbination, a plurality of cooperating cylinxders, and means for throwing such cylinders out of printing relation, a series of form-rolls arranged concentrically to the form-cylinder,

a plate movable concentrically to said form cy 'nder for movin 4 said rolls out of contact with said form-cy 'nder, a spring-impelled shaft for actuating said plate, a trip for'norreleasing said trip, such latter means being actuated by the actuation of the throw-off of the press cylinders.

1 9. In a rotary printing press, having, in combination, a plurality of cooperating cylinders, and means for throwing such cylinders out of printing relation, a series of formrolls arranged concentrically to the form-cylinder, bearings for said form-rolls, and means rolls, of an axially movable plate having peripheral shoulders'for engaging said collars and-moving said rolls from their bearings, means for actuating said plate, comprising a spring-impelled shaft, a trip for normally restraining said shaft, and means for releasing ri I 11. 'Fhe combination with the form-rolls,

of the late en a 'ng therewith for moving said ro s out o t eir, normal positions, said plate bein 'movable concentrically to said rolls and aving an arm equipped with a rack, a spring-im elled shaft having a pinion meshing with sai rack, an arl'non said shaft,

releasing sai trip. 12. In a printing press having a form-c linder, and a' series of'form-rolls, means or automatically moving said rolls out of engagement with said form-cylinder, said means comprising a late mounted concentrically to said form-0y 'nder and having p'eri heral shoulders for, engaging said rolls, sai plate having an arm carrying a rack, a spring-impelled shaft, a gear wheel thereon in mesh with said rack, an arm on said shaft having a lug, a trip for engaging said lu and holding 'a trip for en aging said arm, and means for said arm, a rod having a shoul er'for engagingsaid trip, and a guide for said rod. 7

13. In a printing press having a form-cylinder, the combination'of form-rolls, bearings therefor, a plate axially mounted on the hub of said fornrcylinder, means for normally holding said plate as against turning with said form-cylinder, said plate being constructed to engage each of said rolls and a move them out of their bearings, and means for releasing the holding meansflto permit said plate to move with said form-cylinder to engage said rolls.

14.. In a printing press having a form-cyl inder, the combination voi form-rolls, bearings therefor, a plate axially mounted on the hub of said form-cylinder, and constructed to engage said rolls and move thein out of their In testimony whereof, I have signed this i presence of two subscrib- 25 

